<template>
  <div class="login_container">
    <!-- logo区域 -->
    <div class="login_box">
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 表单区域 -->
      <el-form
        label-width="0px"
        class="login_form"
        :model="loginForm"
        :rules="loginFormRules"
        ref="loginFormRef"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            prefix-icon="iconfont icon-user"
            v-model="loginForm.username"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            prefix-icon="iconfont icon-3702mima"
            type="password"
            v-model="loginForm.password"
          ></el-input>
        </el-form-item>
        <!-- 提交按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 这是表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 表单验证规则
      loginFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 3, max: 18, message: '长度在 6 到 18 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 重置表单数据
    resetLoginForm () {
      // console.log(this)
      this.$refs.loginFormRef.resetFields()
    },
    // 表单提交
    login () {
      this.$refs.loginFormRef.validate(async validate => {
        // console.log(validate)
        if (validate !== true) {
          return console.log()
        }
        // 发送请求进行登录
        const { data: res } = await this.$http.post('login', this.loginForm)
        console.log(res)
        if (res.meta.status !== 200) {
          this.$message({
            message: res.meta.msg,
            type: 'error'
          })
        }
        this.$message({
          message: res.meta.msg,
          type: 'success'
        })
        // 保存token
        window.sessionStorage.setItem('token', res.data.token)
        // 编程式导航跳转到指定的页面
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
  height: 100%;
  background-color: #2b4b6b;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  .avatar_box {
    width: 130px;
    height: 130px;
    border-radius: 50%;
    border: 1px solid #eee;
    padding: 10px;
    box-shadow: 0 0 10px 2px #eee;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
  .login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
    .btns {
      display: flex;
      justify-content: flex-end;
    }
  }
}
</style>
